(19)

(11)

EP 0 948 463 A1

(12)

(43) Date of publication: 13.10.1999 Bulletin 1999/41 (21) Application number: 97954490.0 (22) Date of filing: 29.10.1997

(51) International Patent Classification (IPC):  C02F 1/ 24( . ) C02F 3/ 20( . ) C02F 3/ 30( . ) C02F 3/ 12( . ) C02F 3/ 28( . ) (86) International application number: PCT/NL1997/000592 (87) International publication number: WO 1998/019971 (14.05.1998 Gazette 1998/19)

(84) Designated Contracting States: BE DE ES FR GB NL (30) Priority: 06.11.1996 NL 19961004455 (71) Applicant: PAQUES B.V. 8560 AB Balk (NL)	(72) Inventors: HABETS, Leonard, Hubertus, Alphonsus NL-8604 AD Sneek (NL) ENGELAAR, Antonius, Johannes, Hendrikus Hyacinthus NL-8603 DT Sneek (NL) VELLINGA, Sjoerd, Hubertus, Jozef NL-8458 CP Tjalleberd (NL) (74) Representative: de Bruijn, Leendert C., et al  Nederlandsch Octrooibureau P.O. Box 29720 2502 LS Den Haag 2502 LS Den Haag (NL)